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Unified Diff: patched-ffmpeg-mt/libavcodec/bink.c

Issue 789004: ffmpeg roll of source to mar 9 version... (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/ffmpeg/
Patch Set: '' Created 10 years, 9 months ago
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Index: patched-ffmpeg-mt/libavcodec/bink.c
===================================================================
--- patched-ffmpeg-mt/libavcodec/bink.c (revision 0)
+++ patched-ffmpeg-mt/libavcodec/bink.c (revision 0)
@@ -0,0 +1,1012 @@
+/*
+ * Bink video decoder
+ * Copyright (c) 2009 Konstantin Shishkov
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "avcodec.h"
+#include "dsputil.h"
+#include "binkdata.h"
+#include "mathops.h"
+
+#define ALT_BITSTREAM_READER_LE
+#include "get_bits.h"
+
+#define BINK_FLAG_ALPHA 0x00100000
+#define BINK_FLAG_GRAY 0x00020000
+
+static VLC bink_trees[16];
+
+/**
+ * IDs for different data types used in Bink video codec
+ */
+enum Sources {
+ BINK_SRC_BLOCK_TYPES = 0, ///< 8x8 block types
+ BINK_SRC_SUB_BLOCK_TYPES, ///< 16x16 block types (a subset of 8x8 block types)
+ BINK_SRC_COLORS, ///< pixel values used for different block types
+ BINK_SRC_PATTERN, ///< 8-bit values for 2-colour pattern fill
+ BINK_SRC_X_OFF, ///< X components of motion value
+ BINK_SRC_Y_OFF, ///< Y components of motion value
+ BINK_SRC_INTRA_DC, ///< DC values for intrablocks with DCT
+ BINK_SRC_INTER_DC, ///< DC values for intrablocks with DCT
+ BINK_SRC_RUN, ///< run lengths for special fill block
+
+ BINK_NB_SRC
+};
+
+/**
+ * data needed to decode 4-bit Huffman-coded value
+ */
+typedef struct Tree {
+ int vlc_num; ///< tree number (in bink_trees[])
+ uint8_t syms[16]; ///< leaf value to symbol mapping
+} Tree;
+
+#define GET_HUFF(gb, tree) (tree).syms[get_vlc2(gb, bink_trees[(tree).vlc_num].table,\
+ bink_trees[(tree).vlc_num].bits, 1)]
+
+/**
+ * data structure used for decoding single Bink data type
+ */
+typedef struct Bundle {
+ int len; ///< length of number of entries to decode (in bits)
+ Tree tree; ///< Huffman tree-related data
+ uint8_t *data; ///< buffer for decoded symbols
+ uint8_t *data_end; ///< buffer end
+ uint8_t *cur_dec; ///< pointer to the not yet decoded part of the buffer
+ uint8_t *cur_ptr; ///< pointer to the data that is not read from buffer yet
+} Bundle;
+
+/*
+ * Decoder context
+ */
+typedef struct BinkContext {
+ AVCodecContext *avctx;
+ DSPContext dsp;
+ AVFrame pic, last;
+ int version; ///< internal Bink file version
+ int has_alpha;
+ int swap_planes;
+ ScanTable scantable; ///< permutated scantable for DCT coeffs decoding
+
+ Bundle bundle[BINK_NB_SRC]; ///< bundles for decoding all data types
+ Tree col_high[16]; ///< trees for decoding high nibble in "colours" data type
+ int col_lastval; ///< value of last decoded high nibble in "colours" data type
+} BinkContext;
+
+/**
+ * Bink video block types
+ */
+enum BlockTypes {
+ SKIP_BLOCK = 0, ///< skipped block
+ SCALED_BLOCK, ///< block has size 16x16
+ MOTION_BLOCK, ///< block is copied from previous frame with some offset
+ RUN_BLOCK, ///< block is composed from runs of colours with custom scan order
+ RESIDUE_BLOCK, ///< motion block with some difference added
+ INTRA_BLOCK, ///< intra DCT block
+ FILL_BLOCK, ///< block is filled with single colour
+ INTER_BLOCK, ///< motion block with DCT applied to the difference
+ PATTERN_BLOCK, ///< block is filled with two colours following custom pattern
+ RAW_BLOCK, ///< uncoded 8x8 block
+};
+
+/**
+ * Initializes length length in all bundles.
+ *
+ * @param c decoder context
+ * @param width plane width
+ * @param bw plane width in 8x8 blocks
+ */
+static void init_lengths(BinkContext *c, int width, int bw)
+{
+ c->bundle[BINK_SRC_BLOCK_TYPES].len = av_log2((width >> 3) + 511) + 1;
+
+ c->bundle[BINK_SRC_SUB_BLOCK_TYPES].len = av_log2((width >> 4) + 511) + 1;
+
+ c->bundle[BINK_SRC_COLORS].len = av_log2((width >> 3)*64 + 511) + 1;
+
+ c->bundle[BINK_SRC_INTRA_DC].len =
+ c->bundle[BINK_SRC_INTER_DC].len =
+ c->bundle[BINK_SRC_X_OFF].len =
+ c->bundle[BINK_SRC_Y_OFF].len = av_log2((width >> 3) + 511) + 1;
+
+ c->bundle[BINK_SRC_PATTERN].len = av_log2((bw << 3) + 511) + 1;
+
+ c->bundle[BINK_SRC_RUN].len = av_log2((width >> 3)*48 + 511) + 1;
+}
+
+/**
+ * Allocates memory for bundles.
+ *
+ * @param c decoder context
+ */
+static av_cold void init_bundles(BinkContext *c)
+{
+ int bw, bh, blocks;
+ int i;
+
+ bw = (c->avctx->width + 7) >> 3;
+ bh = (c->avctx->height + 7) >> 3;
+ blocks = bw * bh;
+
+ for (i = 0; i < BINK_NB_SRC; i++) {
+ c->bundle[i].data = av_malloc(blocks * 64);
+ c->bundle[i].data_end = c->bundle[i].data + blocks * 64;
+ }
+}
+
+/**
+ * Frees memory used by bundles.
+ *
+ * @param c decoder context
+ */
+static av_cold void free_bundles(BinkContext *c)
+{
+ int i;
+ for (i = 0; i < BINK_NB_SRC; i++)
+ av_freep(&c->bundle[i].data);
+}
+
+/**
+ * Merges two consequent lists of equal size depending on bits read.
+ *
+ * @param gb context for reading bits
+ * @param dst buffer where merged list will be written to
+ * @param src pointer to the head of the first list (the second lists starts at src+size)
+ * @param size input lists size
+ */
+static void merge(GetBitContext *gb, uint8_t *dst, uint8_t *src, int size)
+{
+ uint8_t *src2 = src + size;
+ int size2 = size;
+
+ do {
+ if (!get_bits1(gb)) {
+ *dst++ = *src++;
+ size--;
+ } else {
+ *dst++ = *src2++;
+ size2--;
+ }
+ } while (size && size2);
+
+ while (size--)
+ *dst++ = *src++;
+ while (size2--)
+ *dst++ = *src2++;
+}
+
+/**
+ * Reads information about Huffman tree used to decode data.
+ *
+ * @param gb context for reading bits
+ * @param tree pointer for storing tree data
+ */
+static void read_tree(GetBitContext *gb, Tree *tree)
+{
+ uint8_t tmp1[16], tmp2[16], *in = tmp1, *out = tmp2;
+ int i, t, len;
+
+ tree->vlc_num = get_bits(gb, 4);
+ if (!tree->vlc_num) {
+ for (i = 0; i < 16; i++)
+ tree->syms[i] = i;
+ return;
+ }
+ if (get_bits1(gb)) {
+ len = get_bits(gb, 3);
+ memset(tmp1, 0, sizeof(tmp1));
+ for (i = 0; i <= len; i++) {
+ tree->syms[i] = get_bits(gb, 4);
+ tmp1[tree->syms[i]] = 1;
+ }
+ for (i = 0; i < 16; i++)
+ if (!tmp1[i])
+ tree->syms[++len] = i;
+ } else {
+ len = get_bits(gb, 2);
+ for (i = 0; i < 16; i++)
+ in[i] = i;
+ for (i = 0; i <= len; i++) {
+ int size = 1 << i;
+ for (t = 0; t < 16; t += size << 1)
+ merge(gb, out + t, in + t, size);
+ FFSWAP(uint8_t*, in, out);
+ }
+ memcpy(tree->syms, in, 16);
+ }
+}
+
+/**
+ * Prepares bundle for decoding data.
+ *
+ * @param gb context for reading bits
+ * @param c decoder context
+ * @param bundle_num number of the bundle to initialize
+ */
+static void read_bundle(GetBitContext *gb, BinkContext *c, int bundle_num)
+{
+ int i;
+
+ if (bundle_num == BINK_SRC_COLORS) {
+ for (i = 0; i < 16; i++)
+ read_tree(gb, &c->col_high[i]);
+ c->col_lastval = 0;
+ }
+ if (bundle_num != BINK_SRC_INTRA_DC && bundle_num != BINK_SRC_INTER_DC)
+ read_tree(gb, &c->bundle[bundle_num].tree);
+ c->bundle[bundle_num].cur_dec =
+ c->bundle[bundle_num].cur_ptr = c->bundle[bundle_num].data;
+}
+
+/**
+ * common check before starting decoding bundle data
+ *
+ * @param gb context for reading bits
+ * @param b bundle
+ * @param t variable where number of elements to decode will be stored
+ */
+#define CHECK_READ_VAL(gb, b, t) \
+ if (!b->cur_dec || (b->cur_dec > b->cur_ptr)) \
+ return 0; \
+ t = get_bits(gb, b->len); \
+ if (!t) { \
+ b->cur_dec = NULL; \
+ return 0; \
+ } \
+
+static int read_runs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
+{
+ int t, v;
+ const uint8_t *dec_end;
+
+ CHECK_READ_VAL(gb, b, t);
+ dec_end = b->cur_dec + t;
+ if (dec_end > b->data_end) {
+ av_log(avctx, AV_LOG_ERROR, "Run value went out of bounds\n");
+ return -1;
+ }
+ if (get_bits1(gb)) {
+ v = get_bits(gb, 4);
+ memset(b->cur_dec, v, t);
+ b->cur_dec += t;
+ } else {
+ while (b->cur_dec < dec_end)
+ *b->cur_dec++ = GET_HUFF(gb, b->tree);
+ }
+ return 0;
+}
+
+static int read_motion_values(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
+{
+ int t, sign, v;
+ const uint8_t *dec_end;
+
+ CHECK_READ_VAL(gb, b, t);
+ dec_end = b->cur_dec + t;
+ if (dec_end > b->data_end) {
+ av_log(avctx, AV_LOG_ERROR, "Too many motion values\n");
+ return -1;
+ }
+ if (get_bits1(gb)) {
+ v = get_bits(gb, 4);
+ if (v) {
+ sign = -get_bits1(gb);
+ v = (v ^ sign) - sign;
+ }
+ memset(b->cur_dec, v, t);
+ b->cur_dec += t;
+ } else {
+ do {
+ v = GET_HUFF(gb, b->tree);
+ if (v) {
+ sign = -get_bits1(gb);
+ v = (v ^ sign) - sign;
+ }
+ *b->cur_dec++ = v;
+ } while (b->cur_dec < dec_end);
+ }
+ return 0;
+}
+
+const uint8_t bink_rlelens[4] = { 4, 8, 12, 32 };
+
+static int read_block_types(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
+{
+ int t, v;
+ int last = 0;
+ const uint8_t *dec_end;
+
+ CHECK_READ_VAL(gb, b, t);
+ dec_end = b->cur_dec + t;
+ if (dec_end > b->data_end) {
+ av_log(avctx, AV_LOG_ERROR, "Too many block type values\n");
+ return -1;
+ }
+ if (get_bits1(gb)) {
+ v = get_bits(gb, 4);
+ memset(b->cur_dec, v, t);
+ b->cur_dec += t;
+ } else {
+ do {
+ v = GET_HUFF(gb, b->tree);
+ if (v < 12) {
+ last = v;
+ *b->cur_dec++ = v;
+ } else {
+ int run = bink_rlelens[v - 12];
+
+ memset(b->cur_dec, last, run);
+ b->cur_dec += run;
+ }
+ } while (b->cur_dec < dec_end);
+ }
+ return 0;
+}
+
+static int read_patterns(AVCodecContext *avctx, GetBitContext *gb, Bundle *b)
+{
+ int t, v;
+ const uint8_t *dec_end;
+
+ CHECK_READ_VAL(gb, b, t);
+ dec_end = b->cur_dec + t;
+ if (dec_end > b->data_end) {
+ av_log(avctx, AV_LOG_ERROR, "Too many pattern values\n");
+ return -1;
+ }
+ while (b->cur_dec < dec_end) {
+ v = GET_HUFF(gb, b->tree);
+ v |= GET_HUFF(gb, b->tree) << 4;
+ *b->cur_dec++ = v;
+ }
+
+ return 0;
+}
+
+static int read_colors(GetBitContext *gb, Bundle *b, BinkContext *c)
+{
+ int t, sign, v;
+ const uint8_t *dec_end;
+
+ CHECK_READ_VAL(gb, b, t);
+ dec_end = b->cur_dec + t;
+ if (dec_end > b->data_end) {
+ av_log(c->avctx, AV_LOG_ERROR, "Too many color values\n");
+ return -1;
+ }
+ if (get_bits1(gb)) {
+ c->col_lastval = GET_HUFF(gb, c->col_high[c->col_lastval]);
+ v = GET_HUFF(gb, b->tree);
+ v = (c->col_lastval << 4) | v;
+ if (c->version < 'i') {
+ sign = ((int8_t) v) >> 7;
+ v = ((v & 0x7F) ^ sign) - sign;
+ v += 0x80;
+ }
+ memset(b->cur_dec, v, t);
+ b->cur_dec += t;
+ } else {
+ while (b->cur_dec < dec_end) {
+ c->col_lastval = GET_HUFF(gb, c->col_high[c->col_lastval]);
+ v = GET_HUFF(gb, b->tree);
+ v = (c->col_lastval << 4) | v;
+ if (c->version < 'i') {
+ sign = ((int8_t) v) >> 7;
+ v = ((v & 0x7F) ^ sign) - sign;
+ v += 0x80;
+ }
+ *b->cur_dec++ = v;
+ }
+ }
+ return 0;
+}
+
+/** number of bits used to store first DC value in bundle */
+#define DC_START_BITS 11
+
+static int read_dcs(AVCodecContext *avctx, GetBitContext *gb, Bundle *b,
+ int start_bits, int has_sign)
+{
+ int i, j, len, len2, bsize, sign, v, v2;
+ int16_t *dst = (int16_t*)b->cur_dec;
+
+ CHECK_READ_VAL(gb, b, len);
+ v = get_bits(gb, start_bits - has_sign);
+ if (v && has_sign) {
+ sign = -get_bits1(gb);
+ v = (v ^ sign) - sign;
+ }
+ *dst++ = v;
+ len--;
+ for (i = 0; i < len; i += 8) {
+ len2 = FFMIN(len - i, 8);
+ bsize = get_bits(gb, 4);
+ if (bsize) {
+ for (j = 0; j < len2; j++) {
+ v2 = get_bits(gb, bsize);
+ if (v2) {
+ sign = -get_bits1(gb);
+ v2 = (v2 ^ sign) - sign;
+ }
+ v += v2;
+ *dst++ = v;
+ if (v < -32768 || v > 32767) {
+ av_log(avctx, AV_LOG_ERROR, "DC value went out of bounds: %d\n", v);
+ return -1;
+ }
+ }
+ } else {
+ for (j = 0; j < len2; j++)
+ *dst++ = v;
+ }
+ }
+
+ b->cur_dec = (uint8_t*)dst;
+ return 0;
+}
+
+/**
+ * Retrieves next value from bundle.
+ *
+ * @param c decoder context
+ * @param bundle bundle number
+ */
+static inline int get_value(BinkContext *c, int bundle)
+{
+ int16_t ret;
+
+ if (bundle < BINK_SRC_X_OFF || bundle == BINK_SRC_RUN)
+ return *c->bundle[bundle].cur_ptr++;
+ if (bundle == BINK_SRC_X_OFF || bundle == BINK_SRC_Y_OFF)
+ return (int8_t)*c->bundle[bundle].cur_ptr++;
+ ret = *(int16_t*)c->bundle[bundle].cur_ptr;
+ c->bundle[bundle].cur_ptr += 2;
+ return ret;
+}
+
+/**
+ * Reads 8x8 block of DCT coefficients.
+ *
+ * @param gb context for reading bits
+ * @param block place for storing coefficients
+ * @param scan scan order table
+ * @param is_intra tells what set of quantizer matrices to use
+ * @return 0 for success, negative value in other cases
+ */
+static int read_dct_coeffs(GetBitContext *gb, DCTELEM block[64], const uint8_t *scan,
+ int is_intra)
+{
+ int coef_list[128];
+ int mode_list[128];
+ int i, t, mask, bits, ccoef, mode, sign;
+ int list_start = 64, list_end = 64, list_pos;
+ int coef_count = 0;
+ int coef_idx[64];
+ int quant_idx;
+ const uint32_t *quant;
+
+ coef_list[list_end] = 4; mode_list[list_end++] = 0;
+ coef_list[list_end] = 24; mode_list[list_end++] = 0;
+ coef_list[list_end] = 44; mode_list[list_end++] = 0;
+ coef_list[list_end] = 1; mode_list[list_end++] = 3;
+ coef_list[list_end] = 2; mode_list[list_end++] = 3;
+ coef_list[list_end] = 3; mode_list[list_end++] = 3;
+
+ bits = get_bits(gb, 4) - 1;
+ for (mask = 1 << bits; bits >= 0; mask >>= 1, bits--) {
+ list_pos = list_start;
+ while (list_pos < list_end) {
+ if (!(mode_list[list_pos] | coef_list[list_pos]) || !get_bits1(gb)) {
+ list_pos++;
+ continue;
+ }
+ ccoef = coef_list[list_pos];
+ mode = mode_list[list_pos];
+ switch (mode) {
+ case 0:
+ coef_list[list_pos] = ccoef + 4;
+ mode_list[list_pos] = 1;
+ case 2:
+ if (mode == 2) {
+ coef_list[list_pos] = 0;
+ mode_list[list_pos++] = 0;
+ }
+ for (i = 0; i < 4; i++, ccoef++) {
+ if (get_bits1(gb)) {
+ coef_list[--list_start] = ccoef;
+ mode_list[ list_start] = 3;
+ } else {
+ int t;
+ if (!bits) {
+ t = 1 - (get_bits1(gb) << 1);
+ } else {
+ t = get_bits(gb, bits) | mask;
+ sign = -get_bits1(gb);
+ t = (t ^ sign) - sign;
+ }
+ block[scan[ccoef]] = t;
+ coef_idx[coef_count++] = ccoef;
+ }
+ }
+ break;
+ case 1:
+ mode_list[list_pos] = 2;
+ for (i = 0; i < 3; i++) {
+ ccoef += 4;
+ coef_list[list_end] = ccoef;
+ mode_list[list_end++] = 2;
+ }
+ break;
+ case 3:
+ if (!bits) {
+ t = 1 - (get_bits1(gb) << 1);
+ } else {
+ t = get_bits(gb, bits) | mask;
+ sign = -get_bits1(gb);
+ t = (t ^ sign) - sign;
+ }
+ block[scan[ccoef]] = t;
+ coef_idx[coef_count++] = ccoef;
+ coef_list[list_pos] = 0;
+ mode_list[list_pos++] = 0;
+ break;
+ }
+ }
+ }
+
+ quant_idx = get_bits(gb, 4);
+ quant = is_intra ? bink_intra_quant[quant_idx]
+ : bink_inter_quant[quant_idx];
+ block[0] = (block[0] * quant[0]) >> 11;
+ for (i = 0; i < coef_count; i++) {
+ int idx = coef_idx[i];
+ block[scan[idx]] = (block[scan[idx]] * quant[idx]) >> 11;
+ }
+
+ return 0;
+}
+
+/**
+ * Reads 8x8 block with residue after motion compensation.
+ *
+ * @param gb context for reading bits
+ * @param block place to store read data
+ * @param masks_count number of masks to decode
+ * @return 0 on success, negative value in other cases
+ */
+static int read_residue(GetBitContext *gb, DCTELEM block[64], int masks_count)
+{
+ int coef_list[128];
+ int mode_list[128];
+ int i, sign, mask, ccoef, mode;
+ int list_start = 64, list_end = 64, list_pos;
+ int nz_coeff[64];
+ int nz_coeff_count = 0;
+
+ coef_list[list_end] = 4; mode_list[list_end++] = 0;
+ coef_list[list_end] = 24; mode_list[list_end++] = 0;
+ coef_list[list_end] = 44; mode_list[list_end++] = 0;
+ coef_list[list_end] = 0; mode_list[list_end++] = 2;
+
+ for (mask = 1 << get_bits(gb, 3); mask; mask >>= 1) {
+ for (i = 0; i < nz_coeff_count; i++) {
+ if (!get_bits1(gb))
+ continue;
+ if (block[nz_coeff[i]] < 0)
+ block[nz_coeff[i]] -= mask;
+ else
+ block[nz_coeff[i]] += mask;
+ masks_count--;
+ if (masks_count < 0)
+ return 0;
+ }
+ list_pos = list_start;
+ while (list_pos < list_end) {
+ if (!(coef_list[list_pos] | mode_list[list_pos]) || !get_bits1(gb)) {
+ list_pos++;
+ continue;
+ }
+ ccoef = coef_list[list_pos];
+ mode = mode_list[list_pos];
+ switch (mode) {
+ case 0:
+ coef_list[list_pos] = ccoef + 4;
+ mode_list[list_pos] = 1;
+ case 2:
+ if (mode == 2) {
+ coef_list[list_pos] = 0;
+ mode_list[list_pos++] = 0;
+ }
+ for (i = 0; i < 4; i++, ccoef++) {
+ if (get_bits1(gb)) {
+ coef_list[--list_start] = ccoef;
+ mode_list[ list_start] = 3;
+ } else {
+ nz_coeff[nz_coeff_count++] = bink_scan[ccoef];
+ sign = -get_bits1(gb);
+ block[bink_scan[ccoef]] = (mask ^ sign) - sign;
+ masks_count--;
+ if (masks_count < 0)
+ return 0;
+ }
+ }
+ break;
+ case 1:
+ mode_list[list_pos] = 2;
+ for (i = 0; i < 3; i++) {
+ ccoef += 4;
+ coef_list[list_end] = ccoef;
+ mode_list[list_end++] = 2;
+ }
+ break;
+ case 3:
+ nz_coeff[nz_coeff_count++] = bink_scan[ccoef];
+ sign = -get_bits1(gb);
+ block[bink_scan[ccoef]] = (mask ^ sign) - sign;
+ coef_list[list_pos] = 0;
+ mode_list[list_pos++] = 0;
+ masks_count--;
+ if (masks_count < 0)
+ return 0;
+ break;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int bink_decode_plane(BinkContext *c, GetBitContext *gb, int plane_idx,
+ int is_chroma)
+{
+ int blk;
+ int i, j, bx, by;
+ uint8_t *dst, *prev, *ref, *ref_start, *ref_end;
+ int v, col[2];
+ const uint8_t *scan;
+ int xoff, yoff;
+ DECLARE_ALIGNED(16, DCTELEM, block[64]);
+ DECLARE_ALIGNED(16, uint8_t, ublock[64]);
+ int coordmap[64];
+
+ const int stride = c->pic.linesize[plane_idx];
+ int bw = is_chroma ? (c->avctx->width + 15) >> 4 : (c->avctx->width + 7) >> 3;
+ int bh = is_chroma ? (c->avctx->height + 15) >> 4 : (c->avctx->height + 7) >> 3;
+ int width = c->avctx->width >> is_chroma;
+
+ init_lengths(c, FFMAX(width, 8), bw);
+ for (i = 0; i < BINK_NB_SRC; i++)
+ read_bundle(gb, c, i);
+
+ ref_start = c->last.data[plane_idx];
+ ref_end = c->last.data[plane_idx]
+ + (bw - 1 + c->last.linesize[plane_idx] * (bh - 1)) * 8;
+
+ for (i = 0; i < 64; i++)
+ coordmap[i] = (i & 7) + (i >> 3) * stride;
+
+ for (by = 0; by < bh; by++) {
+ if (read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_BLOCK_TYPES]) < 0)
+ return -1;
+ if (read_block_types(c->avctx, gb, &c->bundle[BINK_SRC_SUB_BLOCK_TYPES]) < 0)
+ return -1;
+ if (read_colors(gb, &c->bundle[BINK_SRC_COLORS], c) < 0)
+ return -1;
+ if (read_patterns(c->avctx, gb, &c->bundle[BINK_SRC_PATTERN]) < 0)
+ return -1;
+ if (read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_X_OFF]) < 0)
+ return -1;
+ if (read_motion_values(c->avctx, gb, &c->bundle[BINK_SRC_Y_OFF]) < 0)
+ return -1;
+ if (read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTRA_DC], DC_START_BITS, 0) < 0)
+ return -1;
+ if (read_dcs(c->avctx, gb, &c->bundle[BINK_SRC_INTER_DC], DC_START_BITS, 1) < 0)
+ return -1;
+ if (read_runs(c->avctx, gb, &c->bundle[BINK_SRC_RUN]) < 0)
+ return -1;
+
+ if (by == bh)
+ break;
+ dst = c->pic.data[plane_idx] + 8*by*stride;
+ prev = c->last.data[plane_idx] + 8*by*stride;
+ for (bx = 0; bx < bw; bx++, dst += 8, prev += 8) {
+ blk = get_value(c, BINK_SRC_BLOCK_TYPES);
+ // 16x16 block type on odd line means part of the already decoded block, so skip it
+ if ((by & 1) && blk == SCALED_BLOCK) {
+ bx++;
+ dst += 8;
+ prev += 8;
+ continue;
+ }
+ switch (blk) {
+ case SKIP_BLOCK:
+ c->dsp.put_pixels_tab[1][0](dst, prev, stride, 8);
+ break;
+ case SCALED_BLOCK:
+ blk = get_value(c, BINK_SRC_SUB_BLOCK_TYPES);
+ switch (blk) {
+ case RUN_BLOCK:
+ scan = bink_patterns[get_bits(gb, 4)];
+ i = 0;
+ do {
+ int run = get_value(c, BINK_SRC_RUN) + 1;
+
+ i += run;
+ if (i > 64) {
+ av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
+ return -1;
+ }
+ if (get_bits1(gb)) {
+ v = get_value(c, BINK_SRC_COLORS);
+ for (j = 0; j < run; j++)
+ ublock[*scan++] = v;
+ } else {
+ for (j = 0; j < run; j++)
+ ublock[*scan++] = get_value(c, BINK_SRC_COLORS);
+ }
+ } while (i < 63);
+ if (i == 63)
+ ublock[*scan++] = get_value(c, BINK_SRC_COLORS);
+ break;
+ case INTRA_BLOCK:
+ c->dsp.clear_block(block);
+ block[0] = get_value(c, BINK_SRC_INTRA_DC);
+ read_dct_coeffs(gb, block, c->scantable.permutated, 1);
+ c->dsp.idct(block);
+ c->dsp.put_pixels_nonclamped(block, ublock, 8);
+ break;
+ case FILL_BLOCK:
+ v = get_value(c, BINK_SRC_COLORS);
+ c->dsp.fill_block_tab[0](dst, v, stride, 16);
+ break;
+ case PATTERN_BLOCK:
+ for (i = 0; i < 2; i++)
+ col[i] = get_value(c, BINK_SRC_COLORS);
+ for (j = 0; j < 8; j++) {
+ v = get_value(c, BINK_SRC_PATTERN);
+ for (i = 0; i < 8; i++, v >>= 1)
+ ublock[i + j*8] = col[v & 1];
+ }
+ break;
+ case RAW_BLOCK:
+ for (j = 0; j < 8; j++)
+ for (i = 0; i < 8; i++)
+ ublock[i + j*8] = get_value(c, BINK_SRC_COLORS);
+ break;
+ default:
+ av_log(c->avctx, AV_LOG_ERROR, "Incorrect 16x16 block type %d\n", blk);
+ return -1;
+ }
+ if (blk != FILL_BLOCK)
+ c->dsp.scale_block(ublock, dst, stride);
+ bx++;
+ dst += 8;
+ prev += 8;
+ break;
+ case MOTION_BLOCK:
+ xoff = get_value(c, BINK_SRC_X_OFF);
+ yoff = get_value(c, BINK_SRC_Y_OFF);
+ ref = prev + xoff + yoff * stride;
+ if (ref < ref_start || ref > ref_end) {
+ av_log(c->avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
+ bx*8 + xoff, by*8 + yoff);
+ return -1;
+ }
+ c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
+ break;
+ case RUN_BLOCK:
+ scan = bink_patterns[get_bits(gb, 4)];
+ i = 0;
+ do {
+ int run = get_value(c, BINK_SRC_RUN) + 1;
+
+ i += run;
+ if (i > 64) {
+ av_log(c->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
+ return -1;
+ }
+ if (get_bits1(gb)) {
+ v = get_value(c, BINK_SRC_COLORS);
+ for (j = 0; j < run; j++)
+ dst[coordmap[*scan++]] = v;
+ } else {
+ for (j = 0; j < run; j++)
+ dst[coordmap[*scan++]] = get_value(c, BINK_SRC_COLORS);
+ }
+ } while (i < 63);
+ if (i == 63)
+ dst[coordmap[*scan++]] = get_value(c, BINK_SRC_COLORS);
+ break;
+ case RESIDUE_BLOCK:
+ xoff = get_value(c, BINK_SRC_X_OFF);
+ yoff = get_value(c, BINK_SRC_Y_OFF);
+ ref = prev + xoff + yoff * stride;
+ if (ref < ref_start || ref > ref_end) {
+ av_log(c->avctx, AV_LOG_ERROR, "Copy out of bounds @%d, %d\n",
+ bx*8 + xoff, by*8 + yoff);
+ return -1;
+ }
+ c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
+ c->dsp.clear_block(block);
+ v = get_bits(gb, 7);
+ read_residue(gb, block, v);
+ c->dsp.add_pixels8(dst, block, stride);
+ break;
+ case INTRA_BLOCK:
+ c->dsp.clear_block(block);
+ block[0] = get_value(c, BINK_SRC_INTRA_DC);
+ read_dct_coeffs(gb, block, c->scantable.permutated, 1);
+ c->dsp.idct_put(dst, stride, block);
+ break;
+ case FILL_BLOCK:
+ v = get_value(c, BINK_SRC_COLORS);
+ c->dsp.fill_block_tab[1](dst, v, stride, 8);
+ break;
+ case INTER_BLOCK:
+ xoff = get_value(c, BINK_SRC_X_OFF);
+ yoff = get_value(c, BINK_SRC_Y_OFF);
+ ref = prev + xoff + yoff * stride;
+ c->dsp.put_pixels_tab[1][0](dst, ref, stride, 8);
+ c->dsp.clear_block(block);
+ block[0] = get_value(c, BINK_SRC_INTER_DC);
+ read_dct_coeffs(gb, block, c->scantable.permutated, 0);
+ c->dsp.idct_add(dst, stride, block);
+ break;
+ case PATTERN_BLOCK:
+ for (i = 0; i < 2; i++)
+ col[i] = get_value(c, BINK_SRC_COLORS);
+ for (i = 0; i < 8; i++) {
+ v = get_value(c, BINK_SRC_PATTERN);
+ for (j = 0; j < 8; j++, v >>= 1)
+ dst[i*stride + j] = col[v & 1];
+ }
+ break;
+ case RAW_BLOCK:
+ for (i = 0; i < 8; i++)
+ memcpy(dst + i*stride, c->bundle[BINK_SRC_COLORS].cur_ptr + i*8, 8);
+ c->bundle[BINK_SRC_COLORS].cur_ptr += 64;
+ break;
+ default:
+ av_log(c->avctx, AV_LOG_ERROR, "Unknown block type %d\n", blk);
+ return -1;
+ }
+ }
+ }
+ if (get_bits_count(gb) & 0x1F) //next plane data starts at 32-bit boundary
+ skip_bits_long(gb, 32 - (get_bits_count(gb) & 0x1F));
+
+ return 0;
+}
+
+static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *pkt)
+{
+ BinkContext * const c = avctx->priv_data;
+ GetBitContext gb;
+ int plane, plane_idx;
+ int bits_count = pkt->size << 3;
+
+ if(c->pic.data[0])
+ avctx->release_buffer(avctx, &c->pic);
+
+ if(avctx->get_buffer(avctx, &c->pic) < 0){
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return -1;
+ }
+
+ init_get_bits(&gb, pkt->data, bits_count);
+ if (c->has_alpha) {
+ if (c->version >= 'i')
+ skip_bits_long(&gb, 32);
+ if (bink_decode_plane(c, &gb, 3, 0) < 0)
+ return -1;
+ }
+ if (c->version >= 'i')
+ skip_bits_long(&gb, 32);
+
+ for (plane = 0; plane < 3; plane++) {
+ plane_idx = (!plane || !c->swap_planes) ? plane : (plane ^ 3);
+
+ if (bink_decode_plane(c, &gb, plane_idx, !!plane) < 0)
+ return -1;
+ if (get_bits_count(&gb) >= bits_count)
+ break;
+ }
+ emms_c();
+
+ *data_size = sizeof(AVFrame);
+ *(AVFrame*)data = c->pic;
+
+ FFSWAP(AVFrame, c->pic, c->last);
+
+ /* always report that the buffer was completely consumed */
+ return pkt->size;
+}
+
+static av_cold int decode_init(AVCodecContext *avctx)
+{
+ BinkContext * const c = avctx->priv_data;
+ static VLC_TYPE table[16 * 128][2];
+ int i;
+ int flags;
+
+ c->version = avctx->codec_tag >> 24;
+ if (c->version < 'c') {
+ av_log(avctx, AV_LOG_ERROR, "Too old version '%c'\n", c->version);
+ return -1;
+ }
+ if (avctx->extradata_size < 4) {
+ av_log(avctx, AV_LOG_ERROR, "Extradata missing or too short\n");
+ return -1;
+ }
+ flags = AV_RL32(avctx->extradata);
+ c->has_alpha = flags & BINK_FLAG_ALPHA;
+ c->swap_planes = c->version >= 'h';
+ if (!bink_trees[15].table) {
+ for (i = 0; i < 16; i++) {
+ const int maxbits = bink_tree_lens[i][15];
+ bink_trees[i].table = table + i*128;
+ bink_trees[i].table_allocated = 1 << maxbits;
+ init_vlc(&bink_trees[i], maxbits, 16,
+ bink_tree_lens[i], 1, 1,
+ bink_tree_bits[i], 1, 1, INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);
+ }
+ }
+ c->avctx = avctx;
+
+ c->pic.data[0] = NULL;
+
+ if (avcodec_check_dimensions(avctx, avctx->width, avctx->height) < 0) {
+ return 1;
+ }
+
+ avctx->pix_fmt = c->has_alpha ? PIX_FMT_YUVA420P : PIX_FMT_YUV420P;
+
+ avctx->idct_algo = FF_IDCT_BINK;
+ dsputil_init(&c->dsp, avctx);
+ ff_init_scantable(c->dsp.idct_permutation, &c->scantable, bink_scan);
+
+ init_bundles(c);
+
+ return 0;
+}
+
+static av_cold int decode_end(AVCodecContext *avctx)
+{
+ BinkContext * const c = avctx->priv_data;
+
+ if (c->pic.data[0])
+ avctx->release_buffer(avctx, &c->pic);
+ if (c->last.data[0])
+ avctx->release_buffer(avctx, &c->last);
+
+ free_bundles(c);
+ return 0;
+}
+
+AVCodec bink_decoder = {
+ "binkvideo",
+ CODEC_TYPE_VIDEO,
+ CODEC_ID_BINKVIDEO,
+ sizeof(BinkContext),
+ decode_init,
+ NULL,
+ decode_end,
+ decode_frame,
+ .long_name = NULL_IF_CONFIG_SMALL("Bink video"),
+};
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